Current Search: Shellfish (x)
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Title
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Larval biology and mariculture of the angelwing clam, Cyrtopleura costata.
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Creator
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Gustafson, R. G., Creswell, R. LeRoy, Jacobsen, T. R., Vaughan, David E., Harbor Branch Oceanographic Institute
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Date Issued
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1991
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PURL
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http://purl.flvc.org/FCLA/DT/3353860
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Subject Headings
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Clams--Larvae, Mariculture, Shellfish aquaculture
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Format
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Document (PDF)
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Title
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Marine aquaculture enforcement: Passing the buck.
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Creator
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Thunberg, Eric M., Weldon, Richard N., Thomforde, Hugh, Vaughan, David E., Harbor Branch Oceanographic Institute
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Date Issued
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1992
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PURL
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http://purl.flvc.org/FCLA/DT/3174039
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Subject Headings
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Aquaculture --Government policy, Aquaculture industry, Aquaculture --Economic aspects, Oysters, Shellfish
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Format
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Document (PDF)
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Title
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Visual Adaptations of Ontogenetically Migrating Deep-Sea Crustaceans.
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Creator
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Whitehill, Elizabeth A. G., Frank, Tamara M., Florida Atlantic University
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Abstract/Description
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Species that are ontogenetic migrators have early life stages (juveniles) that live shallower in the water column than the adults and therefore experience a brighter environment than the adults. This work provides evidence that juveniles and adults of the ontogenetically migrating crustacean species Gnathophausia ingens, Oplophorus gracilirostris, and Systellaspis debilis have evolved visual adaptations to their respective environments. The juveniles use apposition optics that provide greater...
Show moreSpecies that are ontogenetic migrators have early life stages (juveniles) that live shallower in the water column than the adults and therefore experience a brighter environment than the adults. This work provides evidence that juveniles and adults of the ontogenetically migrating crustacean species Gnathophausia ingens, Oplophorus gracilirostris, and Systellaspis debilis have evolved visual adaptations to their respective environments. The juveniles use apposition optics that provide greater resolution, whereas the adults use superposition optics that maximize sensitivity. These animals also have regional specializations to aid in viewing a light field that is brighter above than below, such as accessory screening pigments located dorsally and superposition type optics ventrally. The non-ontogenetic migrators Notostomus elegans and Notostomus gibbosus possess superposition optics as both juveniles and adults, implying that the changes seen in ontogenetic migrators are indeed visual adaptations.
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Date Issued
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2007
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PURL
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http://purl.flvc.org/fau/fd/FA00000854
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Subject Headings
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Animal navigation, Deep-sea biology, Shellfish fisheries, Spectral sensitivity
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Format
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Document (PDF)
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Title
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INTERACTIONS OF LARGE BENTHOPELAGIC MESOPREDATORS WITH SHELLFISH ENHANCEMENT ACTIVITIES IN FLORIDA COASTAL WATERS.
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Creator
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Cahill, Brianna Violet, Ajemian, Matthew, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
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Abstract/Description
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Shellfish aquaculture “grow-out” sites for Northern Quahog (Mercenaria mercenaria) clams have substantially higher densities than the surrounding ambient environment and thus can attract local molluscivores to these areas. I used acoustic telemetry to examine potential interactions of two highly mobile ray species (cownose ray, whitespotted eagle ray) with two clam grow-out sites in the Indian River Lagoon near Sebastian, FL, where clammers have reported damaged grow-out gear. Visitation...
Show moreShellfish aquaculture “grow-out” sites for Northern Quahog (Mercenaria mercenaria) clams have substantially higher densities than the surrounding ambient environment and thus can attract local molluscivores to these areas. I used acoustic telemetry to examine potential interactions of two highly mobile ray species (cownose ray, whitespotted eagle ray) with two clam grow-out sites in the Indian River Lagoon near Sebastian, FL, where clammers have reported damaged grow-out gear. Visitation patterns of telemetered rays to these sites were compared to other reference sites in the region and modeled using local environmental data. While both species spent greater time elsewhere, I found many instances in which rays remained within range of clam grow-out sites for extended periods (>60 minutes). Mesocosm experiments with whitespotted eagle rays confirmed they were capable of interacting with and damaging clams housed within antipredator materials, although mortality was significantly reduced compared to controls and in particular by multi-layer netting.
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Date Issued
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2021
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PURL
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http://purl.flvc.org/fau/fd/FA00013840
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Subject Headings
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Shellfish fisheries--Florida, Northern quahog, Predators, Biotelemetry
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Format
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Document (PDF)
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Title
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Diversification for the hard clam aquaculture industry through investigation of the blood ark, Anadara ovalis, and ponderous ark, Noetia ponderosa, reproduction and development.
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Creator
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Nissman, Larry D., Florida Atlantic University, Baldwin, John D.
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Abstract/Description
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The hard clam aquaculture industry has largely been limited to the cultivation of the species Mercenaria mercenaria. Two Florida native species of clam, Noetia ponderosa and Anadara ovalis, commonly known as "Ark clams" are being studied for their viability as potential aquaculture species. Early development of the blood ark, Anadara ovalis (Bruguiere, 1789), and the ponderous ark, Noetia ponderosa (Say, 1822) was analyzed with an emphasis on the processes of meiotic maturation and early...
Show moreThe hard clam aquaculture industry has largely been limited to the cultivation of the species Mercenaria mercenaria. Two Florida native species of clam, Noetia ponderosa and Anadara ovalis, commonly known as "Ark clams" are being studied for their viability as potential aquaculture species. Early development of the blood ark, Anadara ovalis (Bruguiere, 1789), and the ponderous ark, Noetia ponderosa (Say, 1822) was analyzed with an emphasis on the processes of meiotic maturation and early embryogenesis through gastrulation, using light and fluorescence microscopy. Both A. ovalis and N. ponderosa oocytes were released at the metaphase I stage of meiosis and shared similar schedules of early development through initial veliger stage. Differences in the timing of development between species were negligible. In addition, the behavior and developmental timeline of the ark clams was very similar to that of Mercenaria mercenaria , which also reaches the D-shaped veliger stage in less than 24 hours.
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Date Issued
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2004
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PURL
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http://purl.flvc.org/fcla/dt/13194
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Subject Headings
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Evolution (Biology), Shellfish culture--Florida, Meiosis, Clams--Florida--Reproduction
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Format
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Document (PDF)